McGregor is now under pressure to keep his job just three games into a two-year contract extension after six seasons in charge.
Although he denied he is feeling any pressure, McGregor said players need to take personal responsibility for their effort and passion for the jersey.
“It’s got to come from within,” he said. “Belief is a by-product of success too and we’ve lost a few games and we’re coming off a not a great year.
“We’ve got to find that. Passion is being excited to play, it’s about being in the moment and going after it so that comes down to the individual.
“The scrimmages at training, the intensity that we’ve trained at, is not transferring on to the field on game day.
“The passion, the excitement, the competitiveness needs to be there, shown by everyone.” While the Warriors were slick and near faultless, the Dragons were disorganised in attack and failed to fire a shot when in threatening field position.
“Attitude is by-product of belief and today at times they looked like strangers out there,” he said.
“We didn’t do anything at speed and a couple of the tries they scored needed to be defended and they weren’t. Defence is all about attitude.
“When we had some field position we turned over possession twice so we didn’t play with any composure there either.”